从五月份开始广播各论下册,6—12章,共七章。第六章甜菜病虫害。甜菜是我们内蒙重要的经济作物。由于甜菜幼苗幼嫩和汁甜,所以甜菜上的病和虫,特别是苗期的虫害常常给生产造成很大损失,甚至毁种。能否防治苗期害虫,保证全苗,关系到甜菜生产的成败,所以防治甜菜害虫关键是抓苗期这一关。为害甜菜的害虫很多。近年来巴盟甜菜受虫害比较突出。学习 From May onwards broadcast the various volumes, chapters 6-12, a total of seven chapters. Chapter VI beet pests and diseases. Beet is an important cash crop in Inner Mongolia. Due to the tender and juicy sugar beet seedlings, diseases and worms on sugar beets, especially pests at the seedling stage, often cause great losses in production and even deforestation. Seedling pests can be controlled to ensure that the whole seedlings, beet production success or failure, so the key is to control sugar beet pests seedling this off. Beet harm pests a lot. In recent years, Bamei beet is more prominent by pests. Learn